Inventor
FUKAI ISAO
JP8 patents
Patents
8 patentsUS5258716ANov 2, 1993
All-pass filter
TOKO INC14 citations73
US5182522AJan 26, 1993
Polar leapfrog filter
TOKO INC11 citations73
US5216375AJun 1, 1993
Variable time-constant type differentiator
TOKO INC8 citations72
US5302910AApr 12, 1994
FM detector circuit with error voltage applied to phase shifting circuit
TOKO INC4 citations62
US5298813AMar 29, 1994
Polar leapfrog filter
TOKO INC6 citations62
US5296763AMar 22, 1994
Polar leapfrog filter
TOKO INC3 citations62
US5293086AMar 8, 1994
Polar leapfrog filter
TOKO INC3 citations62
US5177382AJan 5, 1993
Active filter circuit
TOKO INC6 citations62